Means for automatically arresting talking-machines.



'Autoinat'ieall f Arrestina' Talkinv-Maehines,

ain fr einen ARTHUR E. SPENCER, OF SAN FRANCISCO, AND FRANK C. THOMAS, OF MILL VALLE-HI'. CALIFORNIA.

MEANS FOR AUTOMATICALLY ARRESTING TALKING-MACHINES.

Applieaton tiled 1\Tovembe11 .To all 'wh/0m it may couccr'n:

lle it linown that we, ARTHUR E. SPENCER and Firman `C. TnoMAs, Citizens ot' the United States, residing, respectively, at San li`raneiseo, in the county ot' San l `ra1'1eiseo,` and Mill Valley, .in the county of Marin and State of Calitori'iia, have invented new and uset'ul Improvements in Means for ot' which the following;` a specification..

rlhis invention relates to ineens for-arrestingthe rotation ot' a talkingl machine autmuatieall)Y upon the stoppage of the sounds produced hy the talkingy inaehine` (lne ohjeet of the invention is to pri'ivide a tleviee tor aeooinplishing this and which will not .neeessiiate any change in the loiin or eoiistri|etii1n of the record isel't or in the inode otl using` the talkingl mat-lune.

fr further object is to provi-fie suela a vice ot a very simple eonstruetion.

ln the aeeoinpanying drawing, Figure -l is ay broken plan View ot' a talking inaehine equippetll with our invention; Fig. is a broken Side View thereof; Fig, 3 is a detail cross section. on the line 3*5 ot liigpl; Fig. lis a detail vertical section on the. line o o of Fifi'. l; showing the positions of the parts when the tone tube is elevated; Fig. 5 is a similar view showing` the positions et the parts when `the tone tube is lowered to its operative position; Fig. (5 is a similar view showingthe positions of the parts when the tone tube is also in the lower position hut the pin has arrived at the end ot the record. A

,Referring to the dra wing, upon the thiinble l which Secures the, tone tulle ,il to the sound tube 3 is rigidly secured as y screws 4f, an arin 5, from the end ot which depends a loop G. Also secured to .said thiinhle is a small bracket 7, 'li'orined with a socket, i'n which ean turn a hall il, ha vine' a hearing! l() in which ean slide a rod l the end o'l' said rod haviire` ahead 12 and said rod having;- a collar lil. Said head and collar pre-- Vent the rod sliding out of its heariruel it). The rod is llatteued whore it pas.` through the. hearing, so that it eanuol. urn therein, and the hall `\.as a pin el() in a slot 4:1 in the hraeliet to In'event the turning ot the hall about an axis parallel with the rod. tlaid rod extends through the loop G suspended t'roin the end of the arm 5, and its trout or Speocaton of Letters Patent.

m4, 1910. Serial No. 593,636.

Patente/i .hay 2"; 191i. op ri t lower end l5 is t'ornied with a hearing ,tlin which is secured a small piece et' eatgut e lower end 1G of which preferal'itv tapers to a tine point.. Said bearing` H is so t'orn'sed that the catgut can easily be removed and a new pieee inserted therein when neeessarr.

The loop G tapers toward the lower end, so'

that, when the tone tube is raised, the rod il passing-through said loop G, rests' in said lower end thereof and when the stylus 1T ot the talking machine is lowered on to the reeord 35, the end 16 ot' the eatgut assumes a i tion slightly nearer the Center of the reef? d than the end of the stylus 1T. lllhen the eatg'ut deseends into Contact with the record, it and the rod 11 are supported hy the reeo'- hut the loop can drop a short (listar lower, so that the rod ll1 no longer winners with said loop, hut assinnes a position #err trally thereofv` as shown iu F 4t. t the rod 11 uo longer rests in the bottoni :it Lhe loop, the eatgut would, hat lor ihn groove in the reeorrl, he shifted ln' t tation of the reeord in a transverse or direetiou over thereeorih until the r: assumed a tangential position with reier t to the circle' tleserilwd on the record hy lower end oit' the eatght, and before it ai=` rived at thisI iliosilion the hearing-j 'il wou eontaetwith the stylus 1T. lint on aeeou ot the record lwiogf grooved, this result ii not tale *,ilaee, for vthe catg'ut is, hy i i, weight of the rod 1,1, held in the sonndpreduoing spiral groove in the record into whie i 'it dropped, and, as before stated, slightlyv nearer the center-than the stylus i7, and, in the rotation ot' the record, it is one pelled to'itollow said groove always sliafhtl); vithin7 or in ad\.'anre ot', thestylus` tionyg ever, when the eatgriit arrives at the inner end ol the spiral groove .it no longfer nieves in advance otl the stylus, "le Pause ot its so moving' inward no longer existing. The stylus 't7 tirotwe oit the record, and, in the rotation oli the 'reeorihr approaehes niore and inoro elosely lo the hearing il whirl] holds the eatgutfand eventuell)l roniaris with `the saaie, and the.A eonneelr-s a eireui. 2O whieh, on the side ot the hearing il, extends through the sound tuile, and the traine ot the machine, and on the side o' the stylus ei tends from the reprodiu-er :3l io a serew which is on the reilnodaeefand thent'e lef a las Wire 23 to a galvanic celi Q4 preferably contained in the box of the talking machine. Since as commonly constructed the reproducer 2l is supported upon the tone tube 2 by an interposed sleeve 19 of rubber, the

' electric circuit is not closed by said tone tube.

In thiscircuit is an electroymagnet 25 which attracts an armature 26011 a stem 27 sliding in .bearings 2S and which carries a colla-r 29 adapted to actuate the lever SOused at'present to operate 'the brake 3l of the talking machine. When said lever is actuated, it breaks a Contact in the circuit Q0, consisting of said lever 30 and a bent wire 32 secured to the electro-magnet. When the brake 31 is removed, said coutaet is again closed by the lever, and the circuit 20 is opegi at the stylus` and catgut holder, and is adapted to be closed in the same #wanner as before, When the tone tube is raised for use with another record the arm l1 drops into the tapering lower end of the loop 6, and the holder is therefore out of electrical connection with the stylus, lalso said slides back in its bearing until the coliar abuts against the bracket so that the catgut is out of the Way when removing the stylus and replacing it by another.

We do not confine our invention to the arrangement here shown in which the stylus itself closes the electric circuit controllingl the brake, as this electric circuit may be closed by'contact of any parts moving respectively With the catgut on the one hand and the stylus on the other. Nor do We limit our invention to the means here shown for producing said relative motion, said means being the oblique arrangement of the rod ll to the arm carrying the stylus, as any positive means could be employed to produce this relative movement when permitted to groove in advance of the reproducing mechado so by the arrival of the catgut at the end of the spiral recording groove.

Ve claim l. In combination With a rotating record having a record groove, a talking machine having reproducing mechanism, a device engaging the `groove in advance of the reproducing mechanism,.an electric circuit, means movable respectively With said device and said reproducing mechanism and connected to oi'iposite sides of said circuit to close the circuit by Contact with leach other due to a movement relative to one another of said reproducii'xg mechanism and device, an electro-maguet in said circuit, and a brake for the record controlled by said electro-magnet, substantially as described.

2. In combination with a rotating record haring a record groove, a talking machine having reproducing mechanism, a holder carried by said talking machine, a lilament carried by said holder and engaging the nisni, an electric circuit, means movable With 5 said reproducing mechanism, said'means and said holder being connected to opposite sides of said circuit to close the circuit by Contact with each other due to a move ment relative to one another of said reproducino' mechanism and holder, an electromagnet in said circuit, and a brake for the record controlled by said electro-magnet, substantially as described.

In testimony whereof We have hereunto set our hands in the presence of two subscribing Witnesses.

A. E. SPENCE F. C. THMS. Witnesses FRANC/rs M. WRIGHT, D. B. Riom-inns. 

